Kadaň (Czech pronunciation: [ˈkadaɲ] ; German: Kaaden) is a town in Chomutov District in the Ústí nad Labem Region of the Czech Republic. It has about 18,000 inhabitants. It lies on the banks of the Ohře River and is known as a tourist centre. Kadaň was probably founded at the turn of the 11th and 12th centuries and became a town around 1260. The historic town centre is well preserved and is protected as an urban monument reservation. The most important monuments, protected as national cultural monuments, are the Franciscan Monastery and the late Gothic town hall.